Indicator for hoisting-works



fNo'Model.) 2 sheets-sheet 1.

-- C. J GHNSON.

y INDICATOR POR HOISTING WORKS.

Patented Feb. v18, 1896.

i vceslsaf.

2 Shets-Sheet 2.

(No Model.)

Y o, JoiNfsobL INDICATOR FOR HUISTING WORKS.-

Patented Pet. 18,1896.

ANo 554,782.

AND\ V ELKANAM. PHUTO'UMQWSHIN GTON. D C

UNTTED STATES PATENT OFFICE.

CHARLES JOHNSON, OF BOURNE, OREGON.

INDECATOR FOR HOISTING-WORKS.

SPECIFICATION forming part of Letters Patent No.' 554,782, dated February 18, 1896. Application filed January 30, 1895. Serial No. 536,737. (No model.)

curate record is kept continually in plainv view of the engineer at the hoisting-engine, showing him at a glance the exact distance which the hoisting-rope has traveled, whether the rope be loaded or empty and either hoisting or lowering, thus indicating the true distance and position of the load at the end of the rope, and being extremly useful in connection with hoisting-works for mines andv other hoisting machinery in which the load is not in full view of the engineer at the hoisting-engine. I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure l is an end View of the machine. Fig. 2 is a plan of the machine. Fig. 3 is a plan of the end of the machine, showing the connection with the hoisting-rope. Fig. et is a front View of the indicator showing the indicator dials and hands. Fig. 5 is a plan of the box opened vto show the mechanism of the parts. Fig. 6 is a detail of the indicatingshaft.

Similar letters referto similar parts throughout the several views.

The indicator-plate A is fastened to a box B, which is bolted to a frame K, which carries a shaft J (see Fig. 2) to which is hinged a movable framework O O connected together by the rods c c. This movable framework is also hinged to the axis of a measuring-drum D, which permits the end of the machine carrying the measuring-drum D to rise and fall with the rope F.

The machine is placed in position in plain view of the engineer at the hoisting-works engine and is held in place firmly by bolts from the stationary frame K to any convenient timber about the hoisting-works.

The parts E E are yokes hung on the journals of the drum D and serving as guides for adjustable blocks in which the roller d is journaled, by means of which the roller d is kept constantly pressed tight against the rope F, which turns the drum D` Thus the exact speed of the rope Fis transmitted to the drum D. This speed is then accurately transmitted to the pulley G, as it is fastened on the axis of the measuring-drum D, which drives the belt H, which in turn drives the pulley I, which in turn drives the counter-shaft J. (See Fig. 2.) This counter-shaft J transmits the speed to the cross-shaft L by means of a worm on the counter-shaft J, which works in a gear with ten teeth Z on the cross-shaft L', thus vdecreasing the speed .of the crossshaft L ten times. On the end of this crossshaft L the hand of the indicator a/ is attached. The crossshaft L transmits the speed to the indicating-shaft M by means of a Worm which works in a gear n with ten teeth on the indicating-shaft M, reducing the speed of the indicating-shaft M ten times. This speed is transmitted direct to the indicator CL2 by means of a bevel-gearing 0 p, each containing ten teeth and operating the hand of the indicator 0,2, which is attached to p.

The shaft M reduces the speed ten times again by means of a worm and gear at q, with ten teeth set exactly the reverse of the gearing at m. The little shaft q runs the indicator-hand as, which is attached thereto. Thus, referring to Fig. 4, when the machine is 0perating the indicator a registers one foot and fractions to ten feet, indicator a2 registers ten feet to one. hundred, and indicator as registers one hundred feet to one thousand.

As all the connections for recording speed are xed, the indicator-hands move forward from O to 1,000 when the rope is lowering, and reverse this action when the rope is hoisting.

This machine can be built by any competent machinist out of iron and steel; and the sizes and dimensions of the various parts can easily be adjusted to meet the requirements of all kinds of hoisting machinery.

I am aware that prior to my invention indicating-machines have been made for elevators similar to mine in the reducing device by gearing. I therefore do not claim such a combination broadly, but

What I do claim as my invention, and de- ,sire to secure by Letters Patent, is-

l. The combination, with indicating devices, a drum and a hoisting-rope, of connections between said drum and said indi- IOO eating devices, and means for keeping the framework is hung, connections between said 1o rope against the drum so that the movement shaft and said indicating,- devices, and drivof the rope will turn the drum, substantially ing connections between said drum and said as described. shaft, substantially as described. 5 2. The combination, with indicating de- Vices, a hoisting-rope and a drum bearing on CHARLES .l (HINSON. said rope, of a framework in which at one VitIlesses: end of said framework said drum is jour- GEO. 1I. SHINN,

naled, a shaft on which the other end of the ARTHUR PHILBRICK. 

